Three years after the pandemic halted global gatherings, a top Israeli tech conference was back and ready to wow capitalists venturing to the Jewish state for the first time. The message of the 10th annual OurCrowd summit was clear: Israelis prided themselves on transforming a desert country into a verdant agricultural powerhouse quenched with desalinated seawater, and now their “startup nation,” as homegrown Silicon Valley types are fond of calling the country, was ready to export planet-saving technologies to the rest of the world.